Search Results for author: Sihao Chen

Found 19 papers, 11 papers with code

Conceptual and Unbiased Reasoning in Language Models

no code implementations30 Mar 2024 Ben Zhou, Hongming Zhang, Sihao Chen, Dian Yu, Hongwei Wang, Baolin Peng, Dan Roth, Dong Yu

Conceptual reasoning, the ability to reason in abstract and high-level perspectives, is key to generalization in human cognition.

Decision Making

The Language Barrier: Dissecting Safety Challenges of LLMs in Multilingual Contexts

no code implementations23 Jan 2024 Lingfeng Shen, Weiting Tan, Sihao Chen, Yunmo Chen, Jingyu Zhang, Haoran Xu, Boyuan Zheng, Philipp Koehn, Daniel Khashabi

As the influence of large language models (LLMs) spans across global communities, their safety challenges in multilingual settings become paramount for alignment research.

Dense X Retrieval: What Retrieval Granularity Should We Use?

1 code implementation11 Dec 2023 Tong Chen, Hongwei Wang, Sihao Chen, Wenhao Yu, Kaixin Ma, Xinran Zhao, Hongming Zhang, Dong Yu

We discover that the retrieval unit choice significantly impacts the performance of both retrieval and downstream tasks.

Retrieval Sentence +1

Sub-Sentence Encoder: Contrastive Learning of Propositional Semantic Representations

1 code implementation7 Nov 2023 Sihao Chen, Hongming Zhang, Tong Chen, Ben Zhou, Wenhao Yu, Dian Yu, Baolin Peng, Hongwei Wang, Dan Roth, Dong Yu

We introduce sub-sentence encoder, a contrastively-learned contextual embedding model for fine-grained semantic representation of text.

Contrastive Learning Semantic Similarity +3

ExpertQA: Expert-Curated Questions and Attributed Answers

2 code implementations14 Sep 2023 Chaitanya Malaviya, Subin Lee, Sihao Chen, Elizabeth Sieber, Mark Yatskar, Dan Roth

In this work, we conduct human evaluation of responses from a few representative systems along various axes of attribution and factuality, by bringing domain experts in the loop.

Language Modelling

Dynamic Clue Bottlenecks: Towards Interpretable-by-Design Visual Question Answering

no code implementations24 May 2023 Xingyu Fu, Ben Zhou, Sihao Chen, Mark Yatskar, Dan Roth

We propose the Dynamic Clue Bottleneck Model ( (DCLUB), a method that is designed towards an inherently interpretable VQA system.

Question Answering Visual Question Answering

Towards Corpus-Scale Discovery of Selection Biases in News Coverage: Comparing What Sources Say About Entities as a Start

no code implementations6 Apr 2023 Sihao Chen, William Bruno, Dan Roth

To facilitate research in this domain, we propose and study a conceptual framework, where we compare how sources typically mention certain controversial entities, and use such as indicators for the sources' content selection preferences.

Representation Learning

PropSegmEnt: A Large-Scale Corpus for Proposition-Level Segmentation and Entailment Recognition

no code implementations21 Dec 2022 Sihao Chen, Senaka Buthpitiya, Alex Fabrikant, Dan Roth, Tal Schuster

As these propositions can carry different truth values in the context of a given premise, we argue for the need to recognize the textual entailment relation of each proposition in a sentence individually.

Hallucination Natural Language Inference +2

Stretching Sentence-pair NLI Models to Reason over Long Documents and Clusters

1 code implementation15 Apr 2022 Tal Schuster, Sihao Chen, Senaka Buthpitiya, Alex Fabrikant, Donald Metzler

Natural Language Inference (NLI) has been extensively studied by the NLP community as a framework for estimating the semantic relation between sentence pairs.

Natural Language Inference Retrieval +1

Image Reconstruction for MRI using Deep CNN Priors Trained without Groundtruth

no code implementations10 Apr 2022 Weijie Gan, Cihat Eldeniz, Jiaming Liu, Sihao Chen, Hongyu An, Ulugbek S. Kamilov

We propose a new plug-and-play priors (PnP) based MR image reconstruction method that systematically enforces data consistency while also exploiting deep-learning priors.

Image Reconstruction

MultiOpEd: A Corpus of Multi-Perspective News Editorials

1 code implementation NAACL 2021 Siyi Liu, Sihao Chen, Xander Uyttendaele, Dan Roth

We propose MultiOpEd, an open-domain news editorial corpus that supports various tasks pertaining to the argumentation structure in news editorials, focusing on automatic perspective discovery.

Multi-Task Learning Sentence

Improving Faithfulness in Abstractive Summarization with Contrast Candidate Generation and Selection

no code implementations NAACL 2021 Sihao Chen, Fan Zhang, Kazoo Sone, Dan Roth

Despite significant progress in neural abstractive summarization, recent studies have shown that the current models are prone to generating summaries that are unfaithful to the original context.

Abstractive Text Summarization Hallucination

Evaluating NLP Models via Contrast Sets

no code implementations1 Oct 2020 Matt Gardner, Yoav Artzi, Victoria Basmova, Jonathan Berant, Ben Bogin, Sihao Chen, Pradeep Dasigi, Dheeru Dua, Yanai Elazar, Ananth Gottumukkala, Nitish Gupta, Hanna Hajishirzi, Gabriel Ilharco, Daniel Khashabi, Kevin Lin, Jiangming Liu, Nelson F. Liu, Phoebe Mulcaire, Qiang Ning, Sameer Singh, Noah A. Smith, Sanjay Subramanian, Reut Tsarfaty, Eric Wallace, A. Zhang, Ben Zhou

Unfortunately, when a dataset has systematic gaps (e. g., annotation artifacts), these evaluations are misleading: a model can learn simple decision rules that perform well on the test set but do not capture a dataset's intended capabilities.

Reading Comprehension Sentiment Analysis

PerspectroScope: A Window to the World of Diverse Perspectives

1 code implementation ACL 2019 Sihao Chen, Daniel Khashabi, Chris Callison-Burch, Dan Roth

This work presents PerspectroScope, a web-based system which lets users query a discussion-worthy natural language claim, and extract and visualize various perspectives in support or against the claim, along with evidence supporting each perspective.

Natural Language Inference Natural Language Understanding +1

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